Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu cu chap snippets" » "ngu cau chap snippets", "ngu cu phap snippets", "ngu chu chan snippets", "ngu ca chap snippets", "ngu c chap snippets", "ngu tu chap snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("ngu cu chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu cu chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu cu chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu cu chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.